Iron County Power Outage History
2014–2025 · Missouri
Worse than average — more frequent or longer outages than most counties. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jul 6, 2016 | 12 hrs | 4,029 (54%) | Thunderstorm Wind |
| Jan 5, 2025 | 95 hrs | 3,458 (46%) | Ice Storm |
| Jun 13, 2023 | 1 hrs | 3,234 (43%) | Unnamed event |
| May 9, 2024 | 88 hrs | 3,024 (40%) | Thunderstorm Wind |
| Dec 18, 2015 | 1 hrs | 3,014 (40%) | Unnamed event |
Over the 12 years from 2014 to 2025, Iron County recorded 733 distinct power outage events, averaging 3.3 hours per event.
The single worst outage on record in Iron County started July 6, 2016 (Thunderstorm Wind), lasting 12 hours and leaving up to 4,029 customers without power (54% of the county) at its peak.
May has historically been the worst month for outages in Iron County, with 87 events recorded during that month across the dataset.
Based on this history, Iron County earns a Reliability Grade of D, placing it in the 22nd percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Missouri
Counties with the closest reliability grade and national percentile to Iron County.
| County | Grade | National percentile |
|---|---|---|
| Reynolds County | F | 20th |
| Lawrence County | D | 33rd |
| St. Louis County | F | 10th |
| Bollinger County | D | 36th |
| Holt County | D | 38th |
FAQ
How often does power go out in Iron County?
Between 2014 and 2025, Iron County recorded 733 outage events, averaging 3.3 hours each.
What is Iron County's reliability grade?
Iron County has a Reliability Grade of D, in the 22nd national percentile.
What was the worst power outage in Iron County?
The worst outage on record started July 6, 2016 (Thunderstorm Wind), lasting 12 hours and affecting up to 4,029 customers.